Isiah Thomas feels he has done what owner James Dolan asked him to do when he officially named him Liberty president last May: restore the franchise’s relevance in the WNBA and promote women’s basketball.

Under Thomas’ watch, the Liberty posted the best record in franchise history last season, a 23-11 mark, and earned the top seed in the Eastern Conference for the first time since 2002 before the club was knocked out in the conference finals by the Indiana Fever.

Dolan had been ready to give up ownership of the Liberty because the franchise had sustained sagging attendance and mounting losses — both on the court and financially. The two seasons before Thomas took over, the Liberty failed to make the playoffs and were a combined 26-42.

“In the WNBA, we’re definitely relevant again and that was the main goal,’’ Thomas told The Post in a phone interview. “To make sure we got back up and running so the fans know we’re here to stay. We definitely can contend [for the title].’’

Thomas was also intrigued enough about running the Liberty to pursue partial ownership, but that so far has been blocked by the WNBA. The vote has been tabled until the next Board of Governor’s meeting in May — a sticky issue because Thomas’ hiring was met by protests from women’s groups and a media firestorm because he had been involved in a sexual harassment suit filed by a former Knicks marketing executive.

“I’m just totally focused on being the [Liberty] president,’’ Thomas said.

Thomas is trying to help the Liberty win their first WNBA title, but lost guard
Epiphanny Prince to an ACL injury in November. Thomas said he’s unsure if Prince can make it back next season. That’s why the signing of Zellous, a 2013 All-Star, was essential — and the deal hurt Indiana in the process.

“The toughness she brought to the game helped Indiana,’’ Thomas said. “Her shot-making. Her defensive intensity. Once the season was over, KB [general manager Kristin Bernert, coach] Bill Laimbeer and the coaching staff looked at our needs and sought her out.’’

Laimbeer drafted Zellous when he worked for Detroit.

“Having been coached by Laimbeer helped, an opportunity to play in the Garden to display your talent, our training facilities and it’s a city people love to play in,’’ Thomas said in listing reasons she signed.

Thomas said he hopes the league’s 20th anniversary will lift the WNBA’s profile. The draft is April 14 and training camp opens April 24.

“One of the biggest challenges is getting enough airtime, newspaper time to get the product exposed to the public,’’ Thomas said. “Once people have the opportunity to view our games and see our players, they enjoy the experience and see it’s very good basketball.’’

Because he was promoting the Liberty, Thomas declined to discuss the Knicks or rookie Kristaps Porzingis, saying he would save any remarks for his NBA TV gig.